public static void Scan(
TSAudioStream stream,
TSStreamBuffer buffer,
long bitrate,
ref string tag)
{
if (stream.IsInitialized &&
(stream.StreamType == TSStreamType.DTS_HD_SECONDARY_AUDIO ||
(stream.CoreStream != null &&
stream.CoreStream.IsInitialized))) return;
bool syncFound = false;
uint sync = 0;
for (int i = 0; i < buffer.Length; i++)
{
sync = (sync << 8) + buffer.ReadByte();
if (sync == 0x64582025)
{
syncFound = true;
break;
}
}
if (!syncFound)
{
tag = "CORE";
if (stream.CoreStream == null)
{
stream.CoreStream = new TSAudioStream();
stream.CoreStream.StreamType = TSStreamType.DTS_AUDIO;
}
if (!stream.CoreStream.IsInitialized)
{
buffer.BeginRead();
TSCodecDTS.Scan(stream.CoreStream, buffer, bitrate, ref tag);
}
return;
}
tag = "HD";
int temp1 = buffer.ReadBits(8);
int nuSubStreamIndex = buffer.ReadBits(2);
int nuExtSSHeaderSize = 0;
int nuExtSSFSize = 0;
int bBlownUpHeader = buffer.ReadBits(1);
if (1 == bBlownUpHeader)
{
nuExtSSHeaderSize = buffer.ReadBits(12) + 1;
nuExtSSFSize = buffer.ReadBits(20) + 1;
}
else
{
nuExtSSHeaderSize = buffer.ReadBits(8) + 1;
nuExtSSFSize = buffer.ReadBits(16) + 1;
}
int nuNumAudioPresent = 1;
int nuNumAssets = 1;
int bStaticFieldsPresent = buffer.ReadBits(1);
if (1 == bStaticFieldsPresent)
{
int nuRefClockCode = buffer.ReadBits(2);
int nuExSSFrameDurationCode = buffer.ReadBits(3) + 1;
long nuTimeStamp = 0;
if (1 == buffer.ReadBits(1))
{
nuTimeStamp = (buffer.ReadBits(18) << 18) + buffer.ReadBits(18);
}
nuNumAudioPresent = buffer.ReadBits(3) + 1;
nuNumAssets = buffer.ReadBits(3) + 1;
int[] nuActiveExSSMask = new int[nuNumAudioPresent];
for (int i = 0; i < nuNumAudioPresent; i++)
{
nuActiveExSSMask[i] = buffer.ReadBits(nuSubStreamIndex + 1); //?
}
for (int i = 0; i < nuNumAudioPresent; i++)
{
for (int j = 0; j < nuSubStreamIndex + 1; j++)
{
if (((j + 1) % 2) == 1)
{
int mask = buffer.ReadBits(8);
}
}
}
if (1 == buffer.ReadBits(1))
{
int nuMixMetadataAdjLevel = buffer.ReadBits(2);
int nuBits4MixOutMask = buffer.ReadBits(2) * 4 + 4;
int nuNumMixOutConfigs = buffer.ReadBits(2) + 1;
int[] nuMixOutChMask = new int[nuNumMixOutConfigs];
for (int i = 0; i < nuNumMixOutConfigs; i++)
{
nuMixOutChMask[i] = buffer.ReadBits(nuBits4MixOutMask);
}
}
}
int[] AssetSizes = new int[nuNumAssets];
for (int i = 0; i < nuNumAssets; i++)
{
if (1 == bBlownUpHeader)
{
AssetSizes[i] = buffer.ReadBits(20) + 1;
}
else
{
AssetSizes[i] = buffer.ReadBits(16) + 1;
}
}
for (int i = 0; i < nuNumAssets; i++)
{
long bufferPosition = buffer.Position;
int nuAssetDescriptorFSIZE = buffer.ReadBits(9) + 1;
int DescriptorDataForAssetIndex = buffer.ReadBits(3);
if (1 == bStaticFieldsPresent)
{
int AssetTypeDescrPresent = buffer.ReadBits(1);
if (1 == AssetTypeDescrPresent)
{
int AssetTypeDescriptor = buffer.ReadBits(4);
}
int LanguageDescrPresent = buffer.ReadBits(1);
if (1 == LanguageDescrPresent)
{
int LanguageDescriptor = buffer.ReadBits(24);
}
int bInfoTextPresent = buffer.ReadBits(1);
if (1 == bInfoTextPresent)
{
int nuInfoTextByteSize = buffer.ReadBits(10) + 1;
int[] InfoText = new int[nuInfoTextByteSize];
for (int j = 0; j < nuInfoTextByteSize; j++)
{
InfoText[j] = buffer.ReadBits(8);
}
}
int nuBitResolution = buffer.ReadBits(5) + 1;
int nuMaxSampleRate = buffer.ReadBits(4);
int nuTotalNumChs = buffer.ReadBits(8) + 1;
int bOne2OneMapChannels2Speakers = buffer.ReadBits(1);
int nuSpkrActivityMask = 0;
if (1 == bOne2OneMapChannels2Speakers)
{
int bEmbeddedStereoFlag = 0;
if (nuTotalNumChs > 2)
{
bEmbeddedStereoFlag = buffer.ReadBits(1);
}
int bEmbeddedSixChFlag = 0;
if (nuTotalNumChs > 6)
{
bEmbeddedSixChFlag = buffer.ReadBits(1);
}
int bSpkrMaskEnabled = buffer.ReadBits(1);
int nuNumBits4SAMask = 0;
if (1 == bSpkrMaskEnabled)
{
nuNumBits4SAMask = buffer.ReadBits(2);
nuNumBits4SAMask = nuNumBits4SAMask * 4 + 4;
nuSpkrActivityMask = buffer.ReadBits(nuNumBits4SAMask);
}
// TODO...
}
stream.SampleRate = SampleRates[nuMaxSampleRate];
stream.BitDepth = nuBitResolution;
stream.LFE = 0;
if ((nuSpkrActivityMask & 0x8) == 0x8)
{
++stream.LFE;
}
if ((nuSpkrActivityMask & 0x1000) == 0x1000)
{
++stream.LFE;
}
stream.ChannelCount = nuTotalNumChs - stream.LFE;
}
if (nuNumAssets > 1)
{
// TODO...
break;
}
}
// TODO
if (stream.CoreStream != null)
{
TSAudioStream coreStream = (TSAudioStream)stream.CoreStream;
if (coreStream.AudioMode == TSAudioMode.Extended &&
stream.ChannelCount == 5)
{
stream.AudioMode = TSAudioMode.Extended;
}
/*
if (coreStream.DialNorm != 0)
{
stream.DialNorm = coreStream.DialNorm;
}
*/
}
if (stream.StreamType == TSStreamType.DTS_HD_MASTER_AUDIO)
{
stream.IsVBR = true;
stream.IsInitialized = true;
}
else if (bitrate > 0)
{
stream.IsVBR = false;
stream.BitRate = bitrate;
if (stream.CoreStream != null)
{
stream.BitRate += stream.CoreStream.BitRate;
stream.IsInitialized = true;
}
stream.IsInitialized = (stream.BitRate > 0 ? true : false);
}
}
